A timelapse of all of the photographs the Cassini space probe has taken of Saturn's moon Tethys from Feb. 6, 2004 to Sept. 15, 2015. Note: These sequences at times include rapid flashing.

The new moon of January will be at 7:36 a.m. Eastern Time on Jan. 29, according to the U.S. Naval Observatory, and two days ...

In the upper right of the image, you can see Saturn's moon Tethys, which has more mass than the whole Saturn ring system. Although Saturn's rings cover a large space, they're light and extremely ...